Henry mehl



of the United States of America, residing `at i Io ` part of this specification, Figure l is a vertiportion b', which is internally threaded, the,l to

ISO

being had to the accompanying drawings, and' l NITED STATES PATENT @prima HENRY MEHL, OF BUSHTON, KANSAS.

PUMP.

SPECIFICATION forming part oftewel-s Pa/@ent No. 543,394, dam-Qd July 23, 1895.

Application mea March 7, 1,395.

To @ZZ whom it may concern:

Be it known that I, HENRY MEHL, a citizen Bushton, in the county of Rice and State of Kansas, have invented certain new and useful Improvements in Pumps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to-which it appertains to make and use the same, reference to letters of reference marked thereon, which form a part of this specification.

The object of this invention is to provide a pump which can be cheaply manufactured, the device consisting of but few parts, which are readily separated for access to the interior of the pump; and the invention consists in the special construction, combination, and organization of the parts, as will be hereinafter fully set forth, and particularly pointed out in the claims.

In the accompanying drawings, forming cal sectional view of a pump constructed in accordance with my invention. Fig. 2 is a plan view .of the ring-valve of the pump. Fig. 3 is a sectional view on the line 3 3 of Fig. l. Fig. 4 is adetail sectional View of the seat of the ring-valve, and Fig. 5 is a side view of the exteriorof the pump, Y

A designatesthepump stock or. casing, which is simplya cylindrical tube of proper diameter, having at its upper and lower ends outwardly-,projecting flanges a and a. `To the lower flange is secured a head A', provided with a valve-seat band a depending upper end of the depending portion present-j ing an inclined surface, against which the beveled upper end of the suction-pipe B bears,

said pipe being threaded below the bevel to engage the threads of the portion b. This insures a tight joint without the use of packing. A l

C designates the upper head of the stock or casing, to whichv the exit-pipe C is secured secured to the head A. The lower end of the head C is provided with an outwardly-proseau N5. 540,881.1.. mo'm'oaen jecting flange having bolt-holes therein, wh ich register with the bolt-holes in the outwardlyprojecting flange a.

D designates an annular plate, which is provided with bolt-holesd, which register with the bolt-holes in the anges of the stock A and head C. The annular plate D is also pr0- vided with apertures D', the connecting walls or ribs d having concave upper surfaces, as shown more clearly in Fig. 4. The inner edge of the annular plate D is provided with screwthreads for securing thereto a cylinder E, which is positioned within the pump stock or cylinder A.

F designates the piston, which is adapted to fit snugly within 'the inner cylinder E and is attached to the pump-rod fin any suitable manner.

G designates the lower valve, which is provided with depending guide-springs g, the upper ends of said springsV being bent at an angle for attachment to the valve, while the lower ends are curved to bear against the interior of the suction-pipe. `This valve comprises two parts, between which is clamped a washer G, which bears upon the valve-seat l) when the valve is lowered. The parts of the valve are secured together byan eye-bolt G2,

up of' a flanged metallic ring, to the upper part ofwhich, within the flange, are secured.

guide-springs h, which are bent and curved like those attached to 'the valve G, and are also apertured for the passage of bolts h', the heads of said bolts bearing against a washer or packing-ring placed against the under side of the iiangedV ring H. As the heads of the bolts project beyond the washer or packingring the connecting walls or ribs d of the annular plate D are made concave,'as hereinbefore mentioned, so as to prevent the ringvalve being held off its seat. The spring-guides h will prevent excessive upward movement of thering-valve.

In constructing a pump in accordance with my invention it is desired that the` suctionpipe B shall be of the smallest diameter and that the inner cylinder E' and exhaust or exit pipe C be of substantially the same diameter as the valve G, while the spout of the pump Vneed not eXceed the diameter of the suction-pipe. To the top of the exit-pipe is secured a suitable support, to which is pivoted the pump-handle, to which the piston-rodf is attached.

In use the lower valve of the pump, being the smaller and having less surface for Wear than the upper one, more frequently gets out of order, and consequently oft-ener needs repairing. Therefore, by reason of the construction herein shown and described, this valve can be readily removed by disconnecting the piston-rod and drawing the piston up through the top of the pump, after which the valve is removed by a tool which engages the eye thereof. The valve can be easily replaced, as the space between the lower end ot' the inner cylinder E and the upper end of the head A is less than the length of the valve, and the spring-guides of the valve are therefore guided by the cylinder E into the suction- Plpe- It will be noted that in the construction of this pump the inner cylinder E depends or hangs from the annular plate D, and I consider this an essential feature, as the greatest strain comes upon the cylinder on the downward stroke of the piston, and it is therefore better able to withstand or resist a pulling strain than if the strain came in the opposite direction. This construction also reduces to a considerable extent the length of the stock or casing A and assembles the working parts of the pump closer together, so that the part of the pump which is of increased diameter will be very short by comparison with pumps of the same class.

I am aware that prior to my invention it has been proposed to provide pumps somewhat analogous in construction, inasmuch as they provide an inner cylinder in which opcrates a piston and have valves adjacent to the cylinder as well as a valve below the cylinder, and I do not therefore claim such construction, broadly; but

parts of the plate between the apertures being concave, a ring-valve having a packing 6o and spring guide bars attached thereto by means of bolts which are positioned in line with the apertures in the annular plate, a cylinder E carried by the annular plate, a piston attached to a piston rod, and a valve G having depending spring guide bars which enter the pipe B carried by the stock or casing, the cylinder E and exit pipe being of the y same diameter and of a greater diameter than the suction pipe, substantially as shown and for the purpose set forth.

3. In combination with a pump constructed substantially as shown and provided with a stock or casing A, an annular plate D attached to the stock or casing and provided with apertures, an inner cylinder E attached to said annular plate so as to dependtherefrom, a ring-valve H positioned above the annular plate, and a piston and operating means therefor; together with a valve G having depending guide springs g, the length of the valve G from its washer to the ends of the guide springs being greater than the distance between the seat for said valve and the lower end of the inner cylinder, substantially as shown, whereby the valve can be guided from the cylinder to its seat, as set forth.

In testimony whereof I afx my signature in presence of two witnesses.

HENRY MEHL. Witnesses:

WM. VOLKLAND, WALLACE H. HORNADAY. 

